The Bilstein 24-185479 B6 4600 Gas Pressure Shock Absorber is a high-performance custom shock designed for rear placement on vehicles. It comes with a lifetime warranty, making it a reliable choice for those looking to upgrade their suspension system. The shock features a gas absorber type and is specifically designed for performance, ensuring a smoother and more controlled ride. Manufactured by Bilstein, a trusted brand in automotive parts, this shock is a reliable and durable option for those seeking enhanced handling and stability on the road.